NTLM is being blocked on SDU’s Windows computers

As a fixed part of SDU’s IT security, the older login method NTLM will be blocked on SDU’s Windows computers.

This means that, by default, the computers cannot connect to equipment or systems that use NTLM.

Some SDU services are temporarily exempt from the block while SDU IT moves them to a more secure login method.

What is NTLM?

NTLM stands for NT LAN Manager and is an older Microsoft technology used to verify a user’s identity when accessing, for example, file servers and other resources on a network.

What does this mean for you?

You cannot use your SDU computer to connect to equipment or systems that require NTLM, unless the service is a temporarily exempt SDU service. NAS devices and file servers at home are not covered by this option and are not exempt from the block.

SDU-managed equipment must use a more secure login method so connections can be approved without NTLM.

If an SDU service does not work because of the block, contact Servicedesk. SDU IT will investigate the issue and help find a solution.

Why does SDU IT block NTLM?

NTLM is an older login method with known security weaknesses. Microsoft is phasing out the technology, and in time it will no longer be available. Equipment and systems that still use NTLM must therefore move to a more secure login method, for example Kerberos.

Do you have questions? Contact SDU IT.